Add settings screen

lib/ui/gallery_app_bar_widget.dart

@@ -7,9 +7,9 @@ import 'package:photos/events/user_authenticated_event.dart';
 import 'package:photos/file_repository.dart';
 import 'package:photos/models/selected_files.dart';
 import 'package:photos/ui/email_entry_page.dart';
-import 'package:photos/ui/ott_verification_page.dart';
 import 'package:photos/ui/passphrase_entry_page.dart';
 import 'package:photos/ui/passphrase_reentry_page.dart';
+import 'package:photos/ui/settings_page.dart';
 import 'package:photos/ui/share_folder_widget.dart';
 import 'package:photos/utils/dialog_util.dart';
 import 'package:photos/utils/file_util.dart';
@@ -86,7 +86,20 @@ class _GalleryAppBarWidgetState extends State<GalleryAppBarWidget> {
 
   List<Widget> _getDefaultActions(BuildContext context) {
     List<Widget> actions = List<Widget>();
-    if (!Configuration.instance.hasConfiguredAccount()) {
+    if (Configuration.instance.hasConfiguredAccount()) {
+      actions.add(IconButton(
+        icon: Icon(Icons.settings),
+        onPressed: () {
+          Navigator.of(context).push(
+            MaterialPageRoute(
+              builder: (BuildContext context) {
+                return SettingsPage();
+              },
+            ),
+          );
+        },
+      ));
+    } else {
       actions.add(IconButton(
         icon: Icon(Icons.sync_disabled),
         onPressed: () {
@@ -112,14 +125,6 @@ class _GalleryAppBarWidgetState extends State<GalleryAppBarWidget> {
           );
         },
       ));
-    } else if (widget.type == GalleryAppBarType.local_folder &&
-        widget.title != "Favorites") {
-      actions.add(IconButton(
-        icon: Icon(Icons.person_add),
-        onPressed: () {
-          _showShareCollectionDialog();
-        },
-      ));
     }
     return actions;
   }

lib/ui/settings_page.dart

@@ -0,0 +1,122 @@
+import 'package:dio/dio.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/widgets.dart';
+import 'package:logging/logging.dart';
+import 'package:photos/core/configuration.dart';
+import 'package:photos/ui/loading_widget.dart';
+import 'package:photos/utils/date_time_util.dart';
+
+class SettingsPage extends StatelessWidget {
+  const SettingsPage({Key key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: Text("Settings"),
+      ),
+      body: _getBody(),
+    );
+  }
+
+  Widget _getBody() {
+    return SingleChildScrollView(
+      child: Container(
+        padding: EdgeInsets.all(8),
+        child: Row(
+          children: [
+            UsageWidget(),
+          ],
+        ),
+      ),
+    );
+  }
+}
+
+class UsageWidget extends StatefulWidget {
+  UsageWidget({Key key}) : super(key: key);
+
+  @override
+  UsageWidgetState createState() => UsageWidgetState();
+}
+
+class UsageWidgetState extends State<UsageWidget> {
+  double _usageInGBs;
+  @override
+  void initState() {
+    _getUsage();
+    super.initState();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      child: Expanded(
+        child: Column(
+          children: [
+            Padding(padding: EdgeInsets.all(4)),
+            Align(
+              alignment: Alignment.centerLeft,
+              child: Text(
+                "BILLING",
+                style: TextStyle(
+                  fontWeight: FontWeight.bold,
+                  color: Theme.of(context).accentColor,
+                ),
+              ),
+            ),
+            Padding(padding: EdgeInsets.all(8)),
+            Row(
+              mainAxisAlignment: MainAxisAlignment.spaceBetween,
+              children: [
+                Text("Total data backed up"),
+                _usageInGBs == null
+                    ? loadWidget
+                    : Text(
+                        _usageInGBs.toString() + " GB",
+                      ),
+              ],
+            ),
+            Padding(padding: EdgeInsets.all(4)),
+            Divider(height: 10),
+            Padding(padding: EdgeInsets.all(4)),
+            Row(
+              mainAxisAlignment: MainAxisAlignment.spaceBetween,
+              children: [
+                Text("Tentative bill for " + getMonth(DateTime.now())),
+                _usageInGBs == null ? loadWidget : _getCost(_usageInGBs),
+              ],
+            )
+          ],
+        ),
+      ),
+    );
+  }
+
+  Text _getCost(double usageInGBs) {
+    return Text("\$" + (usageInGBs * 0.1).toStringAsFixed(2));
+  }
+
+  void _getUsage() {
+    Dio().get(
+      Configuration.instance.getHttpEndpoint() + "/billing/usage",
+      queryParameters: {
+        "startTime": 0,
+        "endTime": DateTime.now().microsecondsSinceEpoch,
+        "token": Configuration.instance.getToken(),
+      },
+    ).catchError((e) async {
+      Logger("Settings").severe(e);
+    }).then((response) async {
+      if (response != null && response.statusCode == 200) {
+        final usageInBytes = response.data["usage"];
+        if (mounted) {
+          setState(() {
+            _usageInGBs = double.parse(
+                (usageInBytes / (1024 * 1024 * 1024)).toStringAsFixed(2));
+          });
+        }
+      }
+    });
+  }
+}